Table 1. Distribution of DWV, SBV, ABPV, BQCV, CBPV, and KBV viruses in three different regions in Bulgaria (from 50 apiaries).
| Regiona | No. of hives | DWV | SBV | ABPV | CBPV | BQCV | KBV |
|---|---|---|---|---|---|---|---|
| Smolyan (SB) | 10 | + +c | −b | − | − | − | − |
| Sofia (WB) | 20 | + + + | + + + + + + | − | − | + | − |
| Rousse (NB) | 20 | + + + + + | − | + + | − | − | − |
| No. (%) of positive colonies | 10 (20) |
6 (12) |
2 (4) |
0 | 1 (2) |
0 |
Notes.
a
SB, South Bulgaria; WB, West Bulgaria; NB, North Bulgaria.
b
(+), Positive; (−), Negative.
c
number of detected viruses in each studied region.